It seems like the free BlackBerry deals come in waves. Here is one from Ameritrade that will get you a BlackBerry 7100t from Xview Technologies if you open up and account with a $10,000 balance.
This freebie deal is good for Individual and Joint Ameritrade accounts opened and funded with $10,000 or more by August 31st. At least a one-year qualifying data and voice plan from T-mobile is required as well.
My guess is that not too many people will open an Ameritrade account just to get a free 7100t, however, if you were already going to open an Ameritrade account, fund it with at least $10,000, and, are interested in BlackBerry 7100t with T-Mobile service, this is the deal for you.